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Low-temperature-resistant storage battery internally formed lead plaster

A battery, internalized technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor charging acceptance, insufficient charging and discharging capacity, low driving distance, etc., and achieve the effect of improving life expectancy and reducing return rate.

Active Publication Date: 2013-04-10
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-capacity, long-life battery that is specially suitable for electric vehicle batteries in low-temperature areas in the north to be internalized into lead paste, so as to reduce the poor charging acceptance performance (insufficient charge) of batteries at low temperatures in northern areas. and low discharge capacity (short travel distance) phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The mass fraction of each chemical component in the positive electrode lead paste to the mass of the positive electrode lead paste lead powder is: dilute sulfuric acid 7.4%, deionized water 10.5%, colloidal graphite 0.2%, stannous oxide 0.13%, bismuth trioxide 0.05%, polyester Short fiber 0.09%;

[0020] The mass fraction of each chemical component in the negative electrode lead paste to the mass of the negative electrode lead paste lead powder is: dilute sulfuric acid 7.8%, deionized water 10%, barium sulfate 1.15%, acetylene carbon black 0.35%, sodium lignosulfonate 0.4%, humic acid Acid 0.35%, polyester staple fiber 0.10%.

[0021] The specific gravity of the electrolyte is 1.27g / cm3. The active material ratio between the positive electrode paste and the negative electrode paste is 1:0.89. The density of the positive electrode paste is 4.15g / cm3, and the density of the negative electrode paste is 4.35g / cm3.

Embodiment 2

[0023] The mass fraction of each chemical component in the positive electrode lead paste to the mass of the positive electrode lead paste lead powder is: dilute sulfuric acid 6.8%, deionized water 10%, colloidal graphite 0.1%, stannous oxide 0.06%, bismuth trioxide 0.03%, polyester Short fiber 0.07%;

[0024] The mass fraction of each chemical component in the negative electrode lead paste to the mass of the negative electrode lead paste lead powder is: dilute sulfuric acid 6.8%, deionized water 9%, barium sulfate 1%, acetylene carbon black 0.2%, sodium lignosulfonate 0.2%, humic acid Acid 0.2%, polyester staple fiber 0.08%.

[0025] The specific gravity of the electrolyte is 1.26g / cm3. The active material ratio between the positive electrode paste and the negative electrode paste is 1:0.85. The density of the positive electrode paste is 4.10g / cm3, and the density of the negative electrode paste is 4.25g / cm3.

Embodiment 3

[0027] The mass fraction of each chemical component in the positive electrode lead paste to the mass of the positive electrode lead paste lead powder is: 8% dilute sulfuric acid, 11% deionized water, 0.3% colloidal graphite, 0.2% stannous oxide, 0.08% bismuth trioxide, polyester Short fiber 0.11%;

[0028] The mass fraction of each chemical component in the negative electrode lead paste to the mass of the negative electrode lead paste lead powder is: dilute sulfuric acid 8.7%, deionized water 11%, barium sulfate 1.3%, acetylene carbon black 0.5%, sodium lignosulfonate 0.6%, humic acid Acid 0.5%, polyester staple fiber 0.12%.

[0029] The specific gravity of the electrolyte is 1.28g / cm3. The active material ratio between the positive electrode paste and the negative electrode paste is 1:0.93. The density of the positive electrode paste is 4.20g / cm3, and the density of the negative electrode paste is 4.45g / cm3.

[0030] Among the positive electrode paste chemical components o...

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Abstract

The invention discloses a low-temperature-resistant storage battery internally formed lead plaster. The low-temperature-resistant storage battery internally formed lead plaster consists of a positive electrode lead plaster and a negative electrode lead plaster, wherein based on the mass of lead powder of the positive electrode lead plaster, the positive electrode lead plaster comprises the following chemical components in percentage by mass: 6.8 to 8 percent of dilute sulfuric acid, 10 to 11 percent of deionized water, 0.1 to 0.3 percent of colloidal graphite, 0.06 to 0.2 percent of tin oxide, 0.03 to 0.08 percent of bismuth trioxide and 0.07 to 0.11 percent of polyester staple fiber; and based on the mass of lead powder of the negative electrode lead plaster, the negative electrode lead plaster comprises the following chemical components in percentage by mass: 6.8 to 8.7 percent of dilute sulfuric acid, 9 to 11 percent of deionized water, 1.0 to 1.3 percent of barium sulfate, 0.2 to 0.5 percent of acetylene carbon black, 0.2 to 0.6 percent of lignin sodium sulfonate, 0.20 to 0.50 percent of humic acid and 0.08 to 0.12 percent of polyester staple fiber. By the methods of improving the formula of the lead plaster, the proportion of electrolyte, the weight ratio of positive electrode active substances to negative electrode active substances and the like, the battery is more suitable for the northern environment, so that the life of the battery is prolonged.

Description

technical field [0001] The invention relates to a storage battery suitable for forming lead paste in the low-temperature region in the north. Background technique [0002] With the increasing number of electric bicycles, electric motorcycles, and electric tricycles on the market and the promotion of application scope, the demand for batteries of various types of electric vehicles is increasing sharply, and the number of batteries sold by electric vehicle battery factories is also very large. , the number of returned batteries is also increasing, which is also a problem for battery manufacturers. After a long-term analysis of a large number of returned batteries, it is found that the failure phenomena of batteries in the same area are basically the same except for the reason of assembly. , For the southern region, there are more battery swelling (thermal runaway) and grid corrosion, while for the northern region, the battery has poor charge acceptance performance (undercharge...

Claims

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Application Information

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IPC IPC(8): H01M4/62H01M4/56
CPCY02E60/10
Inventor 周明明赵文超朱志允
Owner CHAOWEI POWER CO LTD
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